<template>
  <div class="app-container">

    <!-- 查询表单 -->
    <el-form :inline="true" class="demo-form-inline"> <!-- :inline="true"  表示在一行显示 -->
      <el-form-item>
        <el-input v-model="searchObj.name" placeholder="讲师名"/>
      </el-form-item>

      <el-form-item>
        <el-select v-model="searchObj.level" clearable placeholder="讲师头衔">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>

      <el-form-item label="添加时间">
        <el-date-picker
          v-model="searchObj.begin"
          type="datetime"
          placeholder="选择开始时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>
      <el-form-item>
        <el-date-picker
          v-model="searchObj.end"
          type="datetime"
          placeholder="选择截止时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="getPageList()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table
      :data="list"
      border
      fit
      highlight-current-row>

      <el-table-column
        label="序号"
        width="70"
        align="center">
        <template slot-scope="scope">
          <!-- 表格翻页的序号递增 -->
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="name" label="名称" width="80" />

      <el-table-column label="头衔" width="80">
        <template slot-scope="scope">
          {{ scope.row.level===1?'高级讲师':'首席讲师' }}
        </template>
      </el-table-column>

      <el-table-column prop="intro" label="资历" />

      <el-table-column prop="gmtCreate" label="添加时间" width="160"/>

      <el-table-column prop="sort" label="排序" width="60" />

      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <router-link :to="'/edu/teacher/edit/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">修改</el-button>
          </router-link>
          <!-- scope.row 表示当前行 -->
          <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeTeacherById(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

   <!-- 分页 -->
    <el-pagination
      background
      :current-page="page"  
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total,prev, pager, next, jumper"
      @current-change="getPageList">
    </el-pagination>

  </div>
</template>

<script>
import teacher from '@/api/edu/teacher'

export default {
  data(){
    return{
      list: null, // 数据列表
      total: 0, // 总记录数
      page: 1, // 当前页
      limit: 10, // 每页记录数
      searchObj: {  // 查询条件封装对象
        // 这些可以不写，上面searchObj.name会自动加进去(v-model 双向绑定)
        // name:"",   
        // level:""
      } 
    }
  },
  created(){
    this.getPageList()
  },
  methods:{
    // 讲师列表的方法
    getPageList(page = 1){  // page = 1：表示不传值默认值为1，传值page随之改变
      this.page = page
      teacher.getPageTeacherList(this.page,this.limit,this.searchObj)
        .then(response => {
          // console.log(response)
          this.list = response.data.rows
          this.total = response.data.total
          // console.log(this.list)
          // console.log(this.total)
        })
    },
    // 条件查询清空的方法
    resetData() {
      this.searchObj = {}
      this.getPageList()
    },
    // 根据id删除讲师
    removeTeacherById(id){
      this.$confirm('此操作将永久删除该记录, 是否继续?','提示',{
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
      .then(() => {
        return teacher.removeTeacher(id)
      })
      .then(() =>{
        this.getPageList()
        this.$message({
          type: 'success',
          message: '删除成功！'
        })
      })
      .catch(response => {
        if (response === 'cancel') {  // cancel：取消按钮的值
            this.$message({
                type: 'info',
                message: '已取消删除'
            })
        } else {
            this.$message({
                type: 'error',
                message: '删除失败！'
            })
        }
      })
    }
  }
}
</script>